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Diffstat (limited to 'sysdeps/vax/strrchr.s')
| -rw-r--r-- | sysdeps/vax/strrchr.s | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/sysdeps/vax/strrchr.s b/sysdeps/vax/strrchr.s deleted file mode 100644 index b0e482c9fa..0000000000 --- a/sysdeps/vax/strrchr.s +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright (c) 1988 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if defined(LIBC_SCCS) && !defined(lint) - .asciz "@(#)strrchr.s 5.4 (Berkeley) 6/1/90" -#endif /* LIBC_SCCS and not lint */ - -/* - * Find the last occurrence of c in the string cp. - * Return pointer to match or null pointer. - * - * char * - * strrchr(cp, c) - * char *cp, c; - */ -#include "DEFS.h" - - .lcomm tbl,256 - -ENTRY(strrchr, 0) - movzwl $65535,r4 /* handy 65535 */ - movq 4(ap),r1 /* r1 = cp; r2 = c */ - movzbl r2,r2 - beql Lzero /* special case for c == '\0' */ - - clrl r5 /* r5 = pointer to last match */ - -/* - * Fancy scanc version. Alas, it is not reentrant. - */ - movab tbl,r3 /* r3 = address of table */ - bbss $0,(r3),Lreent /* ensure not reentering */ - movab (r3)[r2],r4 - incb (r4) /* mark both '\0' and c */ -0: - scanc $65535,(r1),(r3),$1 /* look for c or '\0' */ - beql 0b /* keep looking */ - tstb (r1) - beql 1f /* done if '\0' */ - movab (r1)+,r5 /* save most recently found, and skip over it */ - jbr 0b /* keep looking */ -1: - movl r5,r0 /* return last found (if any) */ - clrb (r4) /* clean up table */ - clrb (r3) - ret - -/* - * Special case for \0. - */ -Lzero: - locc $0,r4,(r1) /* just find end of string */ - beql Lzero /* still looking */ - movl r1,r0 /* found it */ - ret - -/* - * Slower reentrant version is two two-step searches. The first - * phase runs until we know where the string ends; it locates any - * occurrences of c within a 65535-byte block. Once we have found - * the end of the string, we find any further occurrences before - * that location. - */ -Lreent: -0: /* first phase */ - movl r1,r3 - locc $0,r4,(r3) /* look for '\0' */ - bneq 1f - locc r2,r4,(r3) /* continue phase 1 search for c */ - beql 0b - movab (r1)+,r5 /* found c: save and increment pointer */ - brb 0b /* and continue */ - -1: /* second phase */ - subl3 r3,r1,r0 /* length of short block */ - movl r3,r1 -2: - locc r2,r0,(r1) /* look for c */ - beql 3f /* skip if not found */ - movab (r1)+,r5 /* save pointer as before */ - sobgtr r0,2b /* adjust count and loop */ -3: - movl r5,r0 /* return stashed pointer */ - ret - -weak_alias (strrchr, rindex) |